If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
AC Blower motor failure
I have an E39 528iT. It is an American market car with the dual zone
HVAC controls. When I start it with the A/C on (hot humid climate) the blower will run porperly for about 2-3 minutes, and then suddenly stop for 2-3 minutes. It will continue this cycle ad infinitum. The A/C coil is still cold, you can drive the car with the back windows cracked down at speed, and the vent system will draw in chilled air from the outside through the chiller coil. The problem is totally independent of any setting in the HVAC control head. Anybody got an idea? |
Ads |
#2
|
|||
|
|||
AC Blower motor failure
Frost wrote:
> I have an E39 528iT. It is an American market car with the dual zone > HVAC controls. When I start it with the A/C on (hot humid climate) the > blower will run porperly for about 2-3 minutes, and then suddenly stop > for 2-3 minutes. It will continue this cycle ad infinitum. The A/C coil > is still cold, you can drive the car with the back windows cracked down > at speed, and the vent system will draw in chilled air from the outside > through the chiller coil. The problem is totally independent of any > setting in the HVAC control head. Anybody got an idea? So a GOOGLE on "final stage" or "final stage resistor" - or just go to the dealer and get one. Takes about 15 minutes to install. It's located behind the carpeted panel on the right side of the console/tunnel. Very common problem... the new one has been "improved" and hopefully won't fail as often. |
#3
|
|||
|
|||
AC Blower motor failure
dmin wrote:
> So a GOOGLE on "final stage" or "final stage resistor" - or just go to > the dealer and get one. Takes about 15 minutes to install. It's located > behind the carpeted panel on the right side of the console/tunnel. > > Very common problem... the new one has been "improved" and hopefully > won't fail as often. Wow! I was just ready to post a thread with the same problem on my 99 M3. The fan will shut down for a couple of minutes and then return to work properly. When it's 110 degrees Farenheit inside the car that's no fun. Is that part you describe for the e39 the same for the e36? David H. |
#4
|
|||
|
|||
AC Blower motor failure
dmin wrote:
> So a GOOGLE on "final stage" or "final stage resistor" - or just go to > the dealer and get one. Takes about 15 minutes to install. It's located > behind the carpeted panel on the right side of the console/tunnel. > > Very common problem... the new one has been "improved" and hopefully > won't fail as often. Wow! I was just ready to post a thread with the same problem on my 99 M3. The fan will shut down for a couple of minutes and then return to work properly. When it's 110 degrees Farenheit inside the car that's no fun. Is that part you describe for the e39 the same for the e36? David H. |
#5
|
|||
|
|||
AC Blower motor failure
"David Hageman" > wrote in message oups.com... > dmin wrote: > >> So a GOOGLE on "final stage" or "final stage resistor" - or just go to >> the dealer and get one. Takes about 15 minutes to install. It's located >> behind the carpeted panel on the right side of the console/tunnel. >> >> Very common problem... the new one has been "improved" and hopefully >> won't fail as often. > > Wow! I was just ready to post a thread with the same problem on my 99 > M3. > > The fan will shut down for a couple of minutes and then return to work > properly. > When it's 110 degrees Farenheit inside the car that's no fun. > > Is that part you describe for the e39 the same for the e36? > > David H. > Maybe the part is not exactly the same but it performs the same function. The final stage is nothing more than a fancy resistor circuit like the one used in other cars, is just that the BMW part is very poorly designed and more expensive than normal. I had the "final stage" replaced this week on our E46. |
#6
|
|||
|
|||
AC Blower motor failure
admin wrote: > Frost wrote: > > I have an E39 528iT. It is an American market car with the dual zone > > HVAC controls. When I start it with the A/C on (hot humid climate) the > > blower will run porperly for about 2-3 minutes, and then suddenly stop > > for 2-3 minutes. It will continue this cycle ad infinitum. The A/C coil > > is still cold, you can drive the car with the back windows cracked down > > at speed, and the vent system will draw in chilled air from the outside > > through the chiller coil. The problem is totally independent of any > > setting in the HVAC control head. Anybody got an idea? > > So a GOOGLE on "final stage" or "final stage resistor" - or just go to > the dealer and get one. Takes about 15 minutes to install. It's located > behind the carpeted panel on the right side of the console/tunnel. Or the problem could be that notoriously bad capacitor (rated 47 micro Farad) on the circuit board. There used to be a great site that some guy put up that gave clear instructions with pictures on where it was, how to get to it, and how to replace it. I went to Radio Shack, bought the $2 capacitor, some electronics- grade solder, and did the job myself. No problems at all since! Who knows what a dealership or shop would've charged to fix the simple and cheap problem; I'd guess many hundreds of $, based on experience. I just found the link and it's dead. Too bad. There are prob. others, as this is such a common problem. The guys should do a little searching. ----- Kill ratio of Palestinian children to Israeli children 5.7-to-1, Israel's favor. Kill ratio of all Palestinians to Israelis: over 3-to-1. --------- http://www.lrb.co.uk/v28/n06/print/mear01_.html ---------- "Don't worry about American pressure on Israel. We, the Jewish people, control America, and the Americans know it." ---Israeli Prime Minister Ariel Sharon, 2001 -- Cliff |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
1996 Dodge Grand Caravan LE AC/Heater Blower, Relay and Resistor Block Problems 101 | HeadlessHorseman | Dodge | 2 | January 13th 06 12:12 AM |
Blower works only on high | Bill W | Technology | 6 | October 16th 05 12:13 PM |
Problem with Blower Control on 2002 Sebring. | Scott_SS | Technology | 6 | August 23rd 05 03:27 PM |
1996 Dodge Grand Caravan LE AC/Heater Blower, Relay and Resistor Block Problems 101 | HeadlessHorseman | Dodge | 0 | January 5th 05 03:49 PM |